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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-28 23:40 UTC

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Re: [PolySix] Re: MG section malfunctioning; cause?

2010-01-24 by Andrew Jury

Sorry, yes, the KLM367...

A


On 24/01/2010 03:10, "r_j_d_2.phila" <r_j_d_2.phila@yahoo.com> wrote:

>  
>  
>  
>    
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> hi-thanks alot for this. sorry, just to clarify, are we talking IC13 on which
> board? thanks, rj
> 
> --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Andrew
> Jury <andy@...> wrote:
>> >
>> > Hi,
>> > 
>> > First of all check that you have -5vc at IC13 pin 7 with the MG speed pot
>> > fully counter clockwise. Fully clockwise you should have +5v at the same
>> > point. Any deviation means you should be looking at the mux bus or, dare I
>> > say it, the pot itself!  Buzz back and let us know...
>> > 
>> > Cheers,
>> > Andy
>> > 
>> > 
>> > On 23/01/2010 21:38, "r_j_d_2.phila" <r_j_d_2.phila@...> wrote:
>> > 
>>> > >  
>>> > >  
>>> > >  
>>> > >    
>>> > > 
>>> > > hey folks, first of all thanks to all of you who helped me with my SRAM
>>> chip
>>> > > issue. i got a 5514, and the current draw is proper, it now holds the
>>> memory,
>>> > > no battery draining issues.
>>> > > 
>>> > > so i took this on the road, and the MG (LFO) section starting
>>> malfunctioning.
>>> > > issues:
>>> > > 
>>> > > -the RATE pot doesnt throw from roughly 0hz-10hz. it now goes from 0 to
>>> about
>>> > > 3 or 4hz midway and then back to 0hz at the end of the throw.
>>> > > 
>>> > > -the 3-way destination switch only works at VCF
>>> > > 
>>> > > -these malfunctions affect the presets. so any of the patches i had
>>> written
>>> > > that had VCO modulated by the MG are now rendered moot.
>>> > > 
>>> > > any ideas? i have had CMOS chips fail in other Korg instruments of this
>>> era;
>>> > > possibility? thanks alot for the help-rj
>>> > > 
>>> > >  
>>> > >    
>>> > > 
>>> > > 
>> > 
>> > 
>> > 
>> > [Non-text portions of this message have been removed]
>> >
> 
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> 



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